Demountable rim



Jan. 1, 1929. 1,697,797

,1. G. swAlN l DEMOUNTABLE RIM Filed June 14, 1925 Jesi/H CSW/N..

atroz nu* Patented Jan. 1, 1929.

unir 'rares teaser JOSEPH G. SVAN, OF AKRON,'OHIO, ASSIGNOR TO THE FIRESTONEZSTEEL PRODCTS COMPANY, OF AKRON, OHO, A CORFORifTION OF OHIO. v i Y' DEMONTABLE BHW.

Application filed .Tune 14, 1923. Serial No. 645,264.

rihis invention relates to vehicle wheels and has particular reference to tire carrying rims of the demountable type.

A general object of the invention is the provision of novel means whereby a tire carrying rim can be firmly and conveniently secured upon the wheel in such a manner that it may be readily removed therefrom.

A further object is to provide a demountable rim of the form in which fastening lugs are secured to the innerside of the rim in such manner that they are securely fastened to the rim by a simple riveting operation. A further object is to provide a rim which can be secured to a steel felloe without necesitating any operations upon the felloe.

rlhese and other important features of this invention will appear from the followingl description read in connection with the accompanying drawings and will be particularly pointed out in the claim.

Figure l of the drawings shows a side elevation of a wheel with the rim att-ached;

Figure 2 is a part plan view of a section of the demountable rim and felloe showing my novel form of clamping means connected thereto;

Figure 3 is a section on the line 2%3 of Figure 2;

Figure l is a side view of my deinountable rim and clamp;

Figure 5 is a detailed perspective of one of the clamps unattached.

yIn the illustrated embodiment of my invention, the numeral 2 indicates a demountable tire carrying rim of the well known clincher type, although it is to be understood that my invention is not limitedto this pan ticular type but may be readily used with the straight side or inextensible bead type if desired. 0n the inner side of the rim 2 is provided a rim supporting rib 4 which rests upon the outer flange 6 of the fined rim 8, the inner side of the rim being suported on a rear flange 7 of the lined rim, slightly higher than the iange 6. In order to secure the demountable rim 2 on the fined rim 8, a suitable number of clamps 10 are employed. These clamps are substantially L shaped, one leg` 12 of each of which tits against the inner surface of the demountable rim and is secured permanently to it in a manner hereinafter described, and the other leg lll being apertured as at 16 to receive a fastening bolt 18 by which it is fastened to the fixed rim. rl`he bolt opening 16 in the leg ofthe clamp is countersunlr, as shown, to receive the tapered portion 20 formed on the underside of the nut 24. The outer face of the leg 12 of each clamp is provided with lugs 26 which are adapted to project through openings 28 formed in the base ofthe rim 2 and through cutaway portions in the supporting rib it. rlhe inwardly extending portion 80 of the rib 4, which is left between the openings 28, is received in an opening 32 formed in the laterally inwardly extending leg l2 of the clamp. rThe lugs 26, after being passed through the openings 28, are

"riveted over, thereby securely fastening the clamp to the tire carrying rim.

The faces 84 and 36 on both sides of the rib or lug 80 are radial to the rim and engage the adjacent sides of opening 32, so that when the clamp is placed in position it is substantially fixed when dropped in position and the riveting operation simply holds the clamp in position. The strain tending to loosen the clamp from its position is borne by the contacting faces of the clamp and the portion 30 of the rib.

It is to be noted that the inner surface of the portion 30 of the supporting rib d is substantially flush with the inner surface 38 of the clamp and is adapted to rest upon the inclined surface 40 of flange 6 of the i to be passed. By this arrangement it will be clear that a driving connection between the fixed rim and the demountable rim is secured and that the latter will be firmly locked upon the wheel.

The foregoing has been found to constitute an easily assembled equipment whereby a demountable rim may be securely affixed to the felloe of the wheel and readily removed therefrom. The structure is easily manu- Y factured and durable, while, at the same time, it is comparatively light and yet sufficient to meet the requirements in wheels of this type.

l have herein disclosed my invention in connection with one embodiment thereof,

- oirculnferentially spaced Y oints thereon of an inwardly proj eoting ri `upon. the inner surface of the run aligned with and out away beneath the said apertures, the inner' and outer sides of said rib being radial to the riin, and clamps having radially extending` lugs passing through the apertures of the riin and riveted theret0,'said Clamps being apertured `to receive the portions of the rib between the apertures of each pair, the side of the latter apertures being formed to snugly engage the inner and outer sides of the rib;

JOSEPH G. SWAIN. 

